Carrier Air Conditioner Error Codes The printed circuit boards existing inside the indoor unit are equipped with self-diagnostic function to detect malfunction and automatically stops the operation at the air conditioner after blinking of power or timer led as per malfunction.
Carrier Air Conditioner Error Code Solutions
Error Codes List:
Wall Mounted Air Conditioner Error Codes
Indoor Error Codes:
Error Codes | Meaning |
---|---|
E0 | Indoor unit EEPROM parameter error |
E1 | Indoor / outdoor units communication error |
E3 | Indoor fan speed has been out of control |
E4 | Indoor room temperature sensor T1 open circuit or shortcircuit |
E5 | Evaporator coil temperature sensor T2 open circuit or short circuit |
EC | Refrigerant Leakage Detection |
F1 | Outdoor ambient temperature sensor T4 open circuit or short circuit |
F2 | Condenser coil temperature sensor T3 open circuit or short circuit |
F3 | Compressor discharge temperature sensor T5 open circuit or short circuit |
F4 | Outdoor unit EEPROM parameter error |
F5 | Outdoor fan speed has been out of control |
P0 | IPM malfunction or IGBT over-strong current protection |
P1 | Over voltage or over low voltage protection |
P2 | High temperature protection of compressor top diagnosis and solution |
P4 | Inverter compressor drive error |
P5 | Mode conflict |
P6 | Compressor voltage protection |
Outdoor Error Codes:
Error Codes | Meaning |
---|---|
E0 | Outdoor EEPROM malfunction |
E2 | Indoor/outdoor units communication error |
E3 | Communication malfunction between IPM board and outdoor main board |
E4 | Open or short circuit of outdoor unit temperature sensor |
E5 | Voltage protection |
E8 | Outdoor fan speed malfunction |
F1 | No A Indoor unit coil outlet temperature sensor or connector of sensor is defective |
F2 | No B Indoor unit coil outlet temperature sensor or connector of sensor is defective |
F3 | No C Indoor unit coil outlet temperature sensor or connector of sensor is defective |
F4 | No D Indoor unit coil outlet temperature sensor or connector of sensor is defective |
F5 | No E Indoor unit coil outlet temperature sensor or connector of sensor is defective |
P1 | High pressure protection |
P2 | Low pressure protection |
P3 | Current protection of compressor |
P4 | Temperature protection of compressor |
P5 | High temperature protection of condenser |
P6 | IPM module protection |
Outdoor Check Function
00: Normal display
01: Number of indoor units in good connection
02: Outdoor unit running mode
03: A indoor unit capacity HP
04: B indoor unit capacity HP
05: C indoor unit capacity HP
06: D indoor unit capacity HP
07: E indoor unit capacity HP
08: A Indoor unit capacity demand code
09: B Indoor unit capacity demand code
10: C Indoor unit capacity demand code
11: D Indoor unit capacity demand code
12: E Indoor unit capacity demand code
13: Total indoor units amendatory capacity demand code
14: Target frequency corresponding to the total indoor units amendatory capacity demand
15: Target frequency after the frequency limit
16: Target frequency sending to compressor control chip
17: A indoor unit evaporator outlet temp.
18: B indoor unit evaporator outlet temp.
19: C indoor unit evaporator outlet temp
20: D indoor unit evaporator outlet temp.
21: E indoor unit evaporator outlet temp.
22: A indoor unit room temp.
23: B indoor unit room temp.
24: C indoor unit room temp.
25: D indoor unit room temp.
26: E indoor unit room temp.
27: A indoor unit evaporator temp.
28: B indoor unit evaporator temp.
29: C indoor unit evaporator temp.
30: D indoor unit evaporator temp.
31: E indoor unit evaporator temp.
32: Condenser pipe temp.(T3)
33: Outdoorambient temp.(T4)
34: Compressor discharge temp.(Tp)
35: AD value 0f current
36: AD value of voltage
37: EEV open angle forA indoor unit
38: EEV open angle for B indoor unit
39: EEV open angle for C indoor unit
40: EEV open angle for D Indoor unit
41: EEV open angle for E indoor unit
42: Frequency limit symbol
43: Average value of T2
44: Outdoor fan speed
45: The last error or protection code
Judgment by Flashing LED of Indoor Unit
Notes:
- The contents of items B and C and a part of item E are displayed when air conditioner operates
- When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.
- The check codes can be confirmed on the remote controller for servicing.
Caution at Servicing:
- After servicing, push the [ Θ] button to return to the normal mode.
- After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status. However, the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory.
Error Code: 0C
Cause of operation: Short-circuit or disconnection of the room temperatur sensor (TA sensor).
Error Code: 0d
Cause of operation: Being out of place, disconnection, short-circuit, or migration of heat exchanger sensor (TC sensor)
Error Code: 11
Cause of operation: Lock of indoor fan or trouble on the indoor fan circuit
Error Code: 12
Cause of operation: Trouble on other indoor P.C. boards
Error Code: 04
Cause of operation: Return serial signal is not sent to indoor side from operation started. (1) Defective wiring of connecting cable (2) Operation of compressor thermo. Gas shortage Gas leak
Error Code: 05
Cause of operation: Operation command signal is not sent to outdoor side.
Error Code: 14
Cause of operation: Inverter over-current protective circuit operates. (Short time)
Error Code: 16
Cause of operation: Position-detect circuit error or short-circuit between windings of compressor
Error Code: 17
Cause of operation: Current-detect circuit error
Error Code: 18
Cause of operation: Being out of place, disconnection or short- circuit of outdoor temp. sensor
Error Code: 19
Cause of operation: Disconnection or short- circuit of discharge temp. sensor
Error Code: 1A
Cause of operation: Outdoor fan drive system error
Error Code: 1b
Cause of operation: Outdoor heat exchanger temp. sensor error
Error Code: 1C
Cause of operation: Compressor drive output error, Compressor error (lock, missing, etc.), Break down
Error Code: 07
Cause of operation: Return serial signal has been sent when operation started, but it is not sent from halfway.
Error Code: 1d
Cause of operation: Compressor does not rotate.
Error Code: 1E
Cause of operation: Discharge temp. exceeded 117°C
Error Code: 1F
Cause of operation: Break down of compressor
Error Code: 08
Cause of operation: Four-way valve inverse error
Carrier Aircon X-Power Inverter Error Codes;
Outdoor unit:
Code: 1 Heat exchanger sensor (TE) error
Code: 2 Suction sensor (TS) error
Code: 3 Hot gas discharge sensur (TD) ermr
Code: 4 High-pressure protemion error
Code: 5 Outdoor air temperature sensor error (TO)
Code: 6 Outdoor DC fan motor error
Code: 7 Communication error between IPDU (Abnormal stop)
Code: 8 High-pressure release operation
Code: 9 Discharge temp. error: hot gas is too high
Code: 10 EEPROM error
Code: 11 Communication error between IPDU (No abnormal stop)
Code: 12 G-Tr short-circuit protection
Code: 13 Detect circuit error
Code: 14 Current sensor error
Code: 15 Comp. lock error
Code: 16 Comp. break down
Indoor unit:
Code: 2 Condensate Pump Failure or water drain Failure
Code: 3 Indoor unit Room Air sensor fault
Code: 4 Indoor unit Tc Coil sensor fault
Code: 10 Indoor unit software fault (EEPROM Corrupt)
Code: 12 Indoor unit software fault (Address/Zone Corrupt)
Code: 14 Loss of Signal From CDU
Code: 15 Indoor unit Tcj Coil sensor fault
Code: 18 Outdoor unit control box fault (G-Tr short circuit protection)
Code: 20 Position Detection Circuit Error
Code: 21 Outdoor unit Current Sensor fault
Code: 22 Outdoor unit Heat Exchange Sensor fault
Code: 23 Outdoor unit Discharge Temperature Sensor fault
Code: 24 Outdoor unit Fan fault
Code: 26 Other Outdoor unit fault
Code: 27 Outdoor unit Compressor Lock
Code: 28 Outdoor unit Discharge Temperature fault
Code: 29 Outdoor unit Compressor Breakdown
Code: 31 Outdoor unit High TemperatureiPressure Release
Carrier Infinity Series AC Error Codes
The codes are flashed by a series of short and long flashes of the status light. The short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the error code. The short flash is 0.25 seconds ON and the long flash is 1.0 second ON. Time between flashes is 0.25 seconds. Time between short flash and first long flash is 1.0 second. Time between code repeating is 2.5 seconds with LED OFF. Count the number of short and long flashes to determine the appropriate flash code. Table 6 gives possible causes and actions related to each error.
Carrier Window Room AC Error Codes
Operate the fan without cooling until the frost disappears.
E1: Loss of communication between the CCC 2 thermostat and an individual system power module board. The LED will display error code EI and the zone number that lost communication. Any additional zones that loose communication will blink in addition to the current zone.
E2: Open circuit or out-of-range indoor temperature sensor. All heat , cool, and dehumidify operations will be locked out. Manual fan operation will continue.
E3: Indoor Temperature Sensor. All heat, cool, and dehumidify operation will be locked out. Manual fan operation will continue.
E4: Open circuit or out of range Outdoor Temperature Sensor (select models). Heat pump and dehumidification operation will be locked out. Air conditioner, furnace, heat strip and fan operation can continue to operate.
E5: Open circuit or out of range Freeze Sensor. Air conditioner and dehumidification operation will be locked out. Heat pump, furnace, heat strip and fan operation can continue to operate but displays the last temperature set-point.
E6: Open circuit Humidity Sensor (Select Models). Air conditioner and dehumidification will be locked out. Heat pump, furnace heat strip and fan can continue to operate.
E7: Loss of 120 VAC power to all power module boards on the system. The system will shut down.
E8: Invalid zone configuration. The heat pump and heat strip DIP switches are both set to the ON position in one zone. Heat pump, heat strip, air conditioner, and dehumidify operation will be locked out in the affected zone.
E9: Invalid zone configuration. The dehumidifier DIP switch and either the heat pump or heat strip DIP switches are set to the ON position in one zone. Heat pump, heat strip, air conditioner, and dehumidify operation will be locked out in the affected zone.
Sometimes a breaker will look like it is in the operating position but is actually tripped. Be sure to flip the breaker lever to ‘OFF’ and then back to “ON’ with the corresponding click.
Carrier Air Conditioner Other Fault Codes
Fault Code | Solution |
---|---|
nF | Air Filter Replacement Reminder: After 2,880 hours of use, the display window on the indoor unit will flash “nF.” This is a reminder to replace your filter. After 15 seconds, the unit will revert to its previous display. To reset the reminder, press the LED button on your remote control 4 times, or press the MANUAL CONTROL button 3 times. If you don’t reset the reminder, the “nF” indicator will flash again when you restart the unit. |
cl | Air Filter Cleaning Reminder: After 240 hours of use, the display window on the indoor unit will flash “CL.” This is a reminder to clean your filter. After 15 seconds, the unit will revert to its previous display. To reset the reminder, press the LED button on your remote control 4 times, or press the MANUAL CONTROL button 3 times. If you don’t reset the reminder, the “CL” indicator will flash again when you restart the unit. |
ec | Refrigerant Leakage Detection: The indoor unit will automatically display “EC” The “timer” indicator light turns off and the “run” indicator light flashes 7 times when the unit detects refrigerant leakage. |
BL | Filter cleaning Reminding. |
ed | Alarm Light Flashing Slow (Outdoor Unit Error) (40WAW024 only). Outdoor unit fault. |
EE | Alarm Light Flashing Fast (Water Level Error) (40WAW024 only). – Loose connection or disconnected at port on PC board. Tighten the connection or reconnect at port on PC board. – Loose connection or disconnected at port on PC board. Tighten the connection or reconnect at port on PC board. – Drain pump faulty. Replace the drain pump |
FE | Operation and Timer Lights Flashing Fast Together (Address Error) Indoor unit without address. Run automatic addressing option at the outdoor unit. Use remote wireless or wired controller to readdress indoor unit. |
FR | Lack of refrigerant |
How to use remote controller in service mode?
Carrier Performance Series Fault Codes and Troubleshooting
Performance Residential Ductless Multi-Split Heat Pump System
Multi-Split High-Wall Ductless Split System 38GVM
Error Codes | Trouble |
---|---|
08 | Defrost Mode 1 |
0A | Defrost Mode 2 |
F0 | Low charge or refrigeration system blockage |
F3 | Outdoor ambient temperature sensor malfunction |
F4 | Outdoor mid-coil temperature sensor malfunction |
F5 | Outdoor discharge air temperature sensor |
F7 | Cooling oil return cycle |
E1 | System high pressure protection |
E2 | Indoor freeze protection |
E3 | System low pressure protection |
E4 | Compressor discharge high temperature protection |
E6 | Communication error between indoor and outdoor |
E7 | Mode conflict |
E8 | System overload protection |
E9 | Cold Blow Protection |
dd | Test mode |
Fo | Pump down mode |
P0 | IPM Rest |
P5 | Compressor current protection |
P6 | Communication error between the inverter drive and main board |
P7 | Heat sink temperature sensor malfunction |
P8 | IPM over temperature protection |
P9 | Open Contactor |
Pc | Current sensor malfunction |
Pd | Current sensor mis-wiring protection |
PA | Input current protection |
PF | Inverter board ambient temperature sensor malfunction |
PL | Low voltage protection |
PH | High voltage protection |
PP | Abnormal input AC voltage |
PU | Capacitor charging malfunction |
H1 | Heating oil return cycle |
H2 | Forced defrost |
H3 | Compressor overheat protection |
H5 | IPM Protection |
H7 | Compressor speed reduction |
Hc | PFC board protection |
L9 | Compressor high voltage protection |
Lc | Compressor start-up failure |
Ld | Compressor phase loss protection |
LE | Compressor stalling |
LF | Compressor over-speed protection |
A5 | Condenser coil inlet temp sensor malfunction |
A7 | Condenser outlet temperature sensor malfunction |
EE | Memory card error |
En | Frequency limitation for module circuit protection |
EU | Frequency limitation for module temperature protection |
F6 | Frequency limitation for overload protection |
F8 | Frequency limitation for system circuit protection |
F9 | Frequency limitation for module circuit protection |
FH | Frequency limitation for freeze protection |
HE | Compressor demagnetizing protection |
LP | Indoor and outdoor units mismatch |
U1 | Compressor phase detection malfunction |
U3 | Low DC bus voltage |
dn | Communication error between main board and EXV |
13 | Unit A indoor pipe outlet temperature sensor malfunction |
14 | Unit A indoor pipe inlet temperature sensor malfunction |
15 | Unit A Indoor return air sensor malfunction |
16 | Unit A mode conflict |
17 | Unit A freeze protection |
23 | Unit B indoor pipe outlet temperature sensor malfunction |
24 | Unit B indoor pipe inlet temperature sensor malfunction |
25 | Unit B Indoor return air sensor malfunction |
26 | Unit B mode conflict |
27 | Unit B freeze protection |
33 | Unit C indoor unit pipe outlet temperature sensor malfunction |
34 | Unit C indoor unit pipe inlet temperature sensor malfunction |
35 | Unit C Indoor unit return air sensor malfunction |
36 | Unit C mode conflict |
37 | Unit C freeze protection |
41 | Unit D communication error |
42 | Indoor return air temperature sensor malfunction |
43 | Unit D indoor pipe outlet temperature sensor malfunction |
44 | Unit D indoor pipe inlet temperature sensor malfunction |
45 | Unit D Indoor return air temperature sensor malfunction |
46 | Unit D mode conflict |
47 | Unit D freeze protection |
51 | Unit E communication error |
52 | Unit E indoor pipe midway temperature sensor malfunction |
53 | Unit E indoor pipe outlet temperature sensor malfunction |
54 | Unit E indoor pipe inlet temperature sensor malfunction |
55 | Unit E Indoor return air temperature sensor malfunction |
56 | Unit E mode conflict |
57 | Unit E freeze protection |
C5 | Jumper missing on replacement indoor board |
Aircon Split Malfunction Indicator
When several malfunctions occur at the same time, they will be displayed in circulation and every malfunction is displayed for 5s.
Note: o: off ●: on o: blink
Carrier Performance Series Troubleshooting
Problem: Indoor unit emits a bad odor on start-up
Possible Cause:
- Air filter dirty
- Output air still has odor after cleaning filter
Solution:
- Clean the air filter
- Contact your service representative
Problem: You hear water flowing noise when the unit is running
Possible Cause: This is normal and is the refrigerant flowing through the system
Solution: No maintenance required
Problem: Indoor unit produces a mist when the air conditioner is running
Possible Cause: This is normal cooling and is caused by high humidity and temperature in the room
Solution: No maintenance required. Mist should stop as room is cooled down and the humidity is removed.
Problem: Water leaks into room from Indoor unit
Possible Cause: Condensing water has overflowed
Solution: Check indoor condensing drain or call your representative
Problem: Wireless remote control does not work
Possible Cause:
- Batteries are dead.
- Unit needs to be reset
Solution:
- See battery replacement section in this manual and replace batteries.
- Turn off power to indoor unit. Remove plug from wall and then reinsert plug. Restart unit
Problem: Unit/System Does Not Work
Possible Cause:
- To protect the unit upon an immediate restart after a stop, the system controller will delay the unit for 3 minutes before allowing the unit to start back up.
- The circuit breaker has tripped or a fuse has blown.
- Power failure
- Error codes displayed
- Voltage is too low
Solution:
- After turning unit off, wait at least 3 minutes before trying to restart.
- Reset the circuit breaker or replace the fuse with the specified replacement fuse.
- Restart operation when the power is restored.
- Call your service representative.
- Call your service representative
Problem: Cooling is Not Working Properly
Possible Cause:
- The filter is blocked with dust.
- Temperature is not set properly.
- A window or door is open.
- The outdoor unit is obstructed.
- The fan speed is too low.
- The operation mode is in Fan instead of Cool.
Solution:
- Clean the air filter.
- Check the temperature and reset if necessary.
- Close the window or door.
- Remove the obstruction.
- Change the fan speed selection.
- Change the operating mode to Cool or reset the unit.
Problem: Heating is Not Working Properly
Possible Cause:
- The filter is blocked with dust.
- Temperature is set too low.
- A window or door is open.
- The outdoor unit is obstructed.
Solution:
- Clean the air filter.
- Check the temperature and reset if necessary.
- Close the window or door.
- Remove the obstruction
Problem: Unit Stops During Operation
Possible Cause:
- The Off timer is not operating correctly.
- Error codes displayed
Solution:
- Restart the operating mode.
- Call your service representative.
How to Reset a Carrier Air Conditioner Unit? |
---|
1.Locate the “Reset” button on the control panel of the air conditioner. |
2.Hold the “Reset” button for 3 seconds and then release. |
3.Press and hold the “Reset” button for another 3 seconds – this time there should be a light flash on the display. |
4.Wait a few moments while the unit resets. |